Answer:
2.8574142
Step-by-step explanation:
Answer:
Step-by-step explanation:
Equation of a straight line: y = kx + b
Points: (-1,2) and (3,4)
Сompose the system of equations:
Answer:
Della must buy 11 packs of batteries to get free shipping
Answer:
43 1/12
Step-by-step explanation:
Add them together
First we have to have equal denominators
6 3/4 can also be 6 9/12
36 1/3 can also be 36 4/12
We add them to get 42 13/12
12/12 is 1 so we add 1 to 42 and get 43 1/12
Hope this helps
Answer:
Step-by-step explanation:
Given is a sample of contents of a random sample of 10 containers as follows:
10.1 9.7, 10.5, 10.4, 9.8, 9.7, 9.4, 9.9, 10.7, and 9.7 liters.
To check whether the mean is 10.1 litres.
Set up hypothesis as
(two tailed test at 10% level of significance)
Sample mean =9.9
Sample std dev=0.420185
Std error =0.1329
n = 10
df = 9
Mean difference = 9.9-10.1 =-0.2
Test statistic t = -0.2/0.1329 =-1.505
p value= 0.1666
Since p value is >0.10 we accept null hypothesis
Conclusion:
the average content of containers of a particular lubricant is 10.1 liters can be taken as true at 90% level of confidence